Tesla Model S Sedan — Available Years

What's New for 2014
Tesla favors running changes throughout the year rather than annual updates so major changes may depend on the timing of your purchase. Most recently, the company released an all-wheel-drive, dual-motor model called the "D." Available on Model S's with the 85kW battery and known as the P85D, these trim levels add all-wheel drive along with several safety enhancements including a 360-degree sonar system and collision avoidance braking.

What's New for 2015
Instead of typical yearly changes like other automakers, Tesla runs updates throughout the year, especially when it comes to software and electronics. The biggest non-software addition however, is the new P85D. Released late in the 2014 model year, the P85D (P stands for performance, D for dual-motor, all-wheel drive) replaces the standard P85. Also is available is the 85D which also comes with all-wheel drive, but less power.